Combined expansion valve and fixed restriction system for refrigeration cycle
US6502413B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2001 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Apr 2, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2341/062
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A refrigerant cycle has a main expansion valve communicating with an inlet header which in turn communicates with a plurality of flow passages moving towards an evaporator coil. Each of the plurality of passages is provided with an individual restriction which provides additional expansion. The individual restrictions can each be separately controlled or designed such that the flow through each of the passages can be tailored to optimum efficiency and operation within the evaporator coil. However, the use of the main expansion valve in series with these restrictions ensures that each of the restrictions can be relatively simple items. Further, the use of the separate restrictions provides a system which has a simplified inlet header system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.